Improvement in pumps



UNITED STATES PATENT OEEIGE A. B. BARLOW, OF RIPON, WISCONSIN.

IMPROVEMENT IN PUMPS.

Specification forming part of Letters Patent No. 58,972, dated October 23, 1866.

To all whom it may concern:

yBe it known that I, A. B. .BARLOW, of Ripon, in the county of Fond du Lac and State ot' Wisconsin, have invented a new and useful Improvement in Double-Action Pumps; and I do hereby declare that the following is a t'ull, clear, and exact description thereof, which will enable others skilled in thc art to make izontal line .r of Iiig. 1.

Similar letters ot reference indicate like parts.

The object of this invention is to obtain a pump which may be operated in deep wells, such as oil-wells, and in other places where it is desired to submerge the cylinder or the inductionpipe leading into it. The piston and piston-rod are hollow, the former being provided with a valve,wl1ilc the liquid to be raised is admitted into the cylinder above the piston, and also below it, through independent valves.

M designates the cylinder of the pump. It has a valve, G, in its bottom, which is guided by vanes projecting radiaiiy from the valve Stem.

A designates the hollow piston-rod, opening into the chamber B of the piston through the opening F. The bottom of the piston has a valVeopening, E, and there is another valveopening, D, at its top, at one side of the pistonrod. Both these openings are governed by the same valve C. This valve in this example is spherical, and is to be guided in any suitable manner so that it shall not obstruct the opening E of the piston-rod.

L is a side chamber, cast with the cylinder, and connected therewith at the top by an opening, b, which enters the upper part of the cylinder. This side chamber has a valve, H, at its bottom, of the same construction as the valve G.

The seats of the valves G H are made in a piece, I, which extends beneath the cylinder and the side chamber and t'orms the bottom for both of them.

The bottom piece I is supported and inclosed by au annular plate, N, surmounted by a ange, N', whose upper edge meets the flanged edges of the chamber L and of the cylinder, their under sides being recessed in order to receive the bottom piece I and the packing a a., and thereby form a tight joint to prevent leakage.

A packing, a, is placed on both sides of the said bottom piece I, and the lower or outer packing is held fast by means ot' the annular plate or cap N.

By the use of the separate bottom plate l, I am enabled to contine the packing c securely within surrounding flanges N', which elt'ectualiy prevent it bursting or pressing laterally outward, as it does when pressed between simple flat plates.

Both valves G and H open into a common chamber, J, which has a pipe, K, leading down into the liquid to be raised.

The annular plate or cap N is seen in bot tom view in Fig. 2.

When the case of the chamber J-is removed, the valves G and Iii are got at by simply removing the annularplate or cap N and bottom piece I, which, with the case ot' the chamber J, are held to the pump bythe saine bolts. thus greatly simplifying the construction ot' the apparatus.

In operating the pump the descent ot' the piston willeause the valve G to be closed. The valve C will be forced up to its seat to close the valve-opening D, when a partial vacuum wiii be formed in the upper part of the cylinder and in the said chamber L, causing the valve II to be opened by the pressure ot' the liquid in the well, and the liquid to run into said chamber L. Ihen the valve ascends, thc valve C will close the opening E in the bottom ot' the piston, and the valve G will be raised by reason of the partial vacuum formed in the lower part of the cylinder. The valve H will be closed by reason ofthe ascent of the piston, and the tluids and liquids in the upper part ct' the cylinder will be forced into the piston, whence it must go into the hollow pistonrod. A repetition of these operations will cause the tiuids and liquids to ascend the hollow piston-rod to the place of discharge.

It will be observed that by reason ot' the closed chamber-J and its pipe K, which latter is extended downward into the liquid to be roiseththe ey1inder1naybeplneed about thirty feet above the surfuee oi' the liquid in the Weil.

Moreover, the arrangement of the vulves and the construction of the piston and its rod are such us to cause that the weight of lthe eolumu of liquid in the pistolrrod is only on that Valve G and H which ought to be closed durin g' the operations ot' the piston, whereby there is no reaction nguinut the liquider Huid in the well, nor against the incoming' fluid us it enters the irnluetion-Ynlves (iV :uid H.

Having thus deserind myinventioln elninl as new, und desire to secure by Letters Put1 ent- The method, substantially as above deseribed,of1moking the lowerjoints of' the eyiinder :md said chamber by means of a bottom piece, I, and annuler Harige or cap N und the packing material ay a, secured by them by the uid of a surrounding flange, N', substantially as described.

ritme-SS05:

JAY MAYHAM, imrmerx IiNnNm 

